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Articles 1471 - 1500 of 13207
Full-Text Articles in Entire DC Network
Comparison Of Fuzzy And Neural Network Computing Techniques For Performance Prediction Of An Industrial Copper Flotation Circuit, Ivana Jovanović, Fardis Nakhaei, Daniel Kržanović, Vesna Conić, Daniela Urošević
Comparison Of Fuzzy And Neural Network Computing Techniques For Performance Prediction Of An Industrial Copper Flotation Circuit, Ivana Jovanović, Fardis Nakhaei, Daniel Kržanović, Vesna Conić, Daniela Urošević
Mining Engineering Faculty Research & Creative Works
This paper presents the development and validation of five different soft computing methods for flotation performance prediction: (1) two models based on fuzzy logic (Mamdani and Takagi-Sugeno fuzzy inference system) and (2) three models based on artificial neural networks. Copper content in the ore feed, collector dosage in the rougher and the scavenger flotation circuits, slurry pH in the rougher flotation circuit and frother consumption were selected as input parameters to estimate the copper grade and recovery of final concentrate, as well as the copper content in the final tailings of the flotation plant. The training and evaluation of the …
Perfect Polar Alignment Of Parallel Beloamphiphile Monolayers: Synthesis, Characterization, And Crystal Architectures Of Unsymmetrical Phenoxy-Substituted Acetophenone Azines, Harmeet Bhoday, Michael Lewis, Steven P. Kelley, Rainer Glaser
Perfect Polar Alignment Of Parallel Beloamphiphile Monolayers: Synthesis, Characterization, And Crystal Architectures Of Unsymmetrical Phenoxy-Substituted Acetophenone Azines, Harmeet Bhoday, Michael Lewis, Steven P. Kelley, Rainer Glaser
Chemistry Faculty Research & Creative Works
It remains a great challenge to achieve polar order in organic molecular crystals because anti-parallel alignment of side-by-side molecules is intrinsically preferred. We have addressed this problem with a rational design that focuses on the polar stacking of parallel beloamphiphile monolayers (PBAMs) with strong lateral quadrupole-quadrupole attractions. We employ arene-arene interactions as lateral synthons. The first successes were achieved with unsymmetrical donor (X), acceptor (Y) substituted acetophenone azines which form polar PBAMs with double T-contacts between the azines. Near-perfect alignment was achieved with the methoxy series of (MeO, Y)-azines with Y=Cl, Br, I. Here, we report on the synthesis, the …
Γ-Ray Emission From Classical Nova V392 Per: Measurements From Fermi And Hawc, A. Albert, R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A.Ayala Solares, R. Babu, E. Belmont-Moreno, C. Blochwitz, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, E. De La Fuente, C. De León, S. Coutino De Leon, R. Diaz Hernandez, B. L. Dingus, M. A. Duvernois, M. Durocher, J. C. Diaz-Velez, K. Engel, C. Espinoza, K. L. Fan, K. Fang, N. Fraija, J. A. Garcia-Gonzalez, F. Garfias, M. M. Gonzalez, J. A. Goodman, J. P. Harding, S. Hernandez, J. Hinton, D. Huang, F. Hueyotl-Zahuantitla, P. Huntemeyer, A. Iriarte, V. Joshi, A. Lara, W. H. Lee, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, J. Lundeen, K. Malone, V. Marandon, O. Martinez, J. Martinez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Morales-Soto, E. Moreno, M. Mostafa, A. Nayerhoda, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, N. Omodei, A. Peisker, Y. Perez Araujo, E. G. Perez-Perez, C. D. Rho, D. Rosa-Gonzalez, E. Ruiz-Velasco, D. Salazar-Gallegos, F. Salesa Greus, A. Sandoval, J. Serna-Franco, A. J. Smith, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Urena-Mena, L. Villasenor, Xiaojie Wang, E. Willox, A. Zepeda, H. Zhou, L. Chomiuk, E. Aydi, K. L. Li, B. D. Metzgar, I. Vurm
Γ-Ray Emission From Classical Nova V392 Per: Measurements From Fermi And Hawc, A. Albert, R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A.Ayala Solares, R. Babu, E. Belmont-Moreno, C. Blochwitz, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, E. De La Fuente, C. De León, S. Coutino De Leon, R. Diaz Hernandez, B. L. Dingus, M. A. Duvernois, M. Durocher, J. C. Diaz-Velez, K. Engel, C. Espinoza, K. L. Fan, K. Fang, N. Fraija, J. A. Garcia-Gonzalez, F. Garfias, M. M. Gonzalez, J. A. Goodman, J. P. Harding, S. Hernandez, J. Hinton, D. Huang, F. Hueyotl-Zahuantitla, P. Huntemeyer, A. Iriarte, V. Joshi, A. Lara, W. H. Lee, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, J. Lundeen, K. Malone, V. Marandon, O. Martinez, J. Martinez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Morales-Soto, E. Moreno, M. Mostafa, A. Nayerhoda, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, N. Omodei, A. Peisker, Y. Perez Araujo, E. G. Perez-Perez, C. D. Rho, D. Rosa-Gonzalez, E. Ruiz-Velasco, D. Salazar-Gallegos, F. Salesa Greus, A. Sandoval, J. Serna-Franco, A. J. Smith, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Urena-Mena, L. Villasenor, Xiaojie Wang, E. Willox, A. Zepeda, H. Zhou, L. Chomiuk, E. Aydi, K. L. Li, B. D. Metzgar, I. Vurm
Physics Faculty Research & Creative Works
This paper reports on the γ-ray properties of the 2018 Galactic nova V392 Per, spanning photon energies ∼0.1 GeV-100 TeV by combining observations from the Fermi Gamma-ray Space Telescope and the HAWC Observatory. As one of the most rapidly evolving γ-ray signals yet observed for a nova, GeV γ-rays with a power-law spectrum with an index Γ = 2.0 ± 0.1 were detected over 8 days following V392 Per's optical maximum. HAWC observations constrain the TeV γ-ray signal during this time and also before and after. We observe no statistically significant evidence of TeV γ-ray emission from V392 Per, but …
It’S Time To Change Our Documentation Philosophy: Writing Better Neurology Notes Without The Burnout, Jorge M. Rodríguez-Fernández, Jeffrey A. Loeb, Daniel B. Hier
It’S Time To Change Our Documentation Philosophy: Writing Better Neurology Notes Without The Burnout, Jorge M. Rodríguez-Fernández, Jeffrey A. Loeb, Daniel B. Hier
Chemistry Faculty Research & Creative Works
Succinct Clinical Documentation is Vital to Effective Twenty-First-Century Healthcare. Recent Changes in Outpatient and Inpatient Evaluation and Management (E/M) Guidelines Have Allowed Neurology Practices to Make Changes that Reduce the Documentation Burden and Enhance Clinical Note Usability. Despite Favorable Changes in E/M Guidelines, Some Neurology Practices Have Not Moved Quickly to Change their Documentation Philosophy. We Argue in Favor of Changes in the Design, Structure, and Implementation of Clinical Notes that Make Them Shorter Yet Still Information-Rich. a Move from Physician-Centric to Team Documentation Can Reduce Work for Physicians. Changing the Documentation Philosophy from "Bigger is Better" to "Short But …
Kinetic And Structural Characterization Of A Flavin-Dependent Putrescine N-Hydroxylase From Acinetobacter Baumannii, Noah S. Lyons, Alexandra N. Bogner, John J. Tanner, Pablo Sobrado
Kinetic And Structural Characterization Of A Flavin-Dependent Putrescine N-Hydroxylase From Acinetobacter Baumannii, Noah S. Lyons, Alexandra N. Bogner, John J. Tanner, Pablo Sobrado
Chemistry Faculty Research & Creative Works
Acinetobacter baumannii is a Gram-negative opportunistic pathogen that causes nosocomial infections, especially among immunocompromised individuals. The rise of multidrug resistant strains of A. baumannii has limited the use of standard antibiotics, highlighting a need for new drugs that exploit novel mechanisms of pathogenicity. Disrupting iron acquisition by inhibiting the biosynthesis of iron-chelating molecules (siderophores) secreted by the pathogen is a potential strategy for developing new antibiotics. Here we investigated FbsI, an N-hydroxylating monooxygenase involved in the biosynthesis of fimsbactin A, the major siderophore produced by A. baumannii. FbsI was characterized using steady-state and transient-state kinetics, spectroscopy, X-ray crystallography, and small-angle …
Tau Kinetics In Alzheimer's Disease, Daniel B. Hier, Sima Azizi, Matthew S. Thimgan, Donald C. Wunsch
Tau Kinetics In Alzheimer's Disease, Daniel B. Hier, Sima Azizi, Matthew S. Thimgan, Donald C. Wunsch
Chemistry Faculty Research & Creative Works
The Cytoskeletal Protein Tau is Implicated in the Pathogenesis of Alzheimer's Disease Which is Characterized by Intra-Neuronal Neurofibrillary Tangles Containing Abnormally Phosphorylated Insoluble Tau. Levels of Soluble Tau Are Elevated in the Brain, the CSF, and the Plasma of Patients with Alzheimer's Disease. to Better Understand the Causes of These Elevated Levels of Tau, We Propose a Three-Compartment Kinetic Model (Brain, CSF, and Plasma). the Model Assumes that the Synthesis of Tau Follows Zero-Order Kinetics (Uncorrelated with Compartmental Tau Levels) and that the Release, Absorption, and Clearance of Tau is Governed by First-Order Kinetics (Linearly Related to Compartmental Tau Levels). …
Location Heartbleeding: The Rise Of Wi-Fi Spoofing Attack Via Geolocation Api, Xiao Han, Junjie Xiong, Wenbo Shen, Zhuo Lu, Yao Liu
Location Heartbleeding: The Rise Of Wi-Fi Spoofing Attack Via Geolocation Api, Xiao Han, Junjie Xiong, Wenbo Shen, Zhuo Lu, Yao Liu
Computer Science Faculty Research & Creative Works
Location spoofing attack deceiving a Wi-Fi positioning system has been studied for over a decade. However, it has been challenging to construct a practical spoofing attack in urban areas with dense coverage of legitimate Wi-Fi APs. This paper identifies the vulnerability of the Google Geolocation API, which returns the location of a mobile device based on the information of the Wi-Fi access points that the device can detect. We show that this vulnerability can be exploited by the attacker to reveal the black-box localization algorithms adopted by the Google Wi-Fi positioning system and easily launch the location spoofing attack in …
Conservative Unconditionally Stable Decoupled Numerical Schemes For The Cahn–Hilliard–Navier–Stokes–Darcy–Boussinesq System, Wenbin Chen, Daozhi Han, Xiaoming Wang, Yichao Zhang
Conservative Unconditionally Stable Decoupled Numerical Schemes For The Cahn–Hilliard–Navier–Stokes–Darcy–Boussinesq System, Wenbin Chen, Daozhi Han, Xiaoming Wang, Yichao Zhang
Mathematics and Statistics Faculty Research & Creative Works
We propose two mass and heat energy conservative, unconditionally stable, decoupled numerical algorithms for solving the Cahn–Hilliard–Navier–Stokes–Darcy–Boussinesq system that models thermal convection of two-phase flows in superposed free flow and porous media. The schemes totally decouple the computation of the Cahn–Hilliard equation, the Darcy equations, the heat equation, the Navier–Stokes equations at each time step, and thus significantly reducing the computational cost. We rigorously show that the schemes are conservative and energy-law preserving. Numerical results are presented to demonstrate the accuracy and stability of the algorithms.
An American Physiological Society Cross-Journal Call For Papers On “The Physiology Of Obesity”, Sue C. Bodine, Heddwen L. Brooks, Hilary A. Coller, Ana I. Domingos, Mark R. Frey, Barbara E. Goodman, Thomas R. Kleyman, Merry L. Lindsey, Rory E. Morty, Ole H. Petersen, Jan Marino Ramírez, Liliana Schaefer, Morten B. Thomsen, Gina L.C. Yosten
An American Physiological Society Cross-Journal Call For Papers On “The Physiology Of Obesity”, Sue C. Bodine, Heddwen L. Brooks, Hilary A. Coller, Ana I. Domingos, Mark R. Frey, Barbara E. Goodman, Thomas R. Kleyman, Merry L. Lindsey, Rory E. Morty, Ole H. Petersen, Jan Marino Ramírez, Liliana Schaefer, Morten B. Thomsen, Gina L.C. Yosten
Biological Sciences Faculty Research & Creative Works
No abstract provided.
Prediction Of Sulfur Removal From Iron Concentrate Using Column Flotation Froth Features: Comparison Of K-Means Clustering, Regression, Backpropagation Neural Network, And Convolutional Neural Network, Fardis Nakhaei, Samira Rahimi, Mohammadbagher Fathi
Prediction Of Sulfur Removal From Iron Concentrate Using Column Flotation Froth Features: Comparison Of K-Means Clustering, Regression, Backpropagation Neural Network, And Convolutional Neural Network, Fardis Nakhaei, Samira Rahimi, Mohammadbagher Fathi
Mining Engineering Faculty Research & Creative Works
Froth feature extraction plays a significant role in the monitoring and control of the flotation process. Image-based soft sensors have received a great deal of interest in the flotation process due to their low-cost and non-intrusive properties. This study proposes data-driven soft sensor models based on froth images to predict the key performance indicators of the flotation process. The ability of multiple linear regression (MLR), the backpropagation neural network (BPNN), the k-means clustering algorithm, and the convolutional neural network (CNN) to predict the amount of sulfur removal from iron ore concentrate in the column flotation process was examined. A total …
Validation Of Standardized Data Formats And Tools For Ground-Level Particle-Based Gamma-Ray Observatories, A. Albert, R. Alfaro, J. C. Arteaga-Velázquez, H. A. Ayala Solares, R. Babu, E. Belmont-Moreno, C. Brisbois, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, S. Coutiño De León, E. De La Fuente, R. Diaz Hernandez, M. A. Duvernois, M. Durocher, C. Espinoza, K. L. Fan, M. Fernandez Alonso, N. Fraija, J. A. Garcia-Gonzalez, H. Goksu, M. M. Gonzalez, J. A. Goodman, J. P. Harding, J. Hinton, D. Huang, F. Hueyotl-Zahuantitla, P. Huntemeyer, A. Jardin-Blicq, V. Joshi, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, K. Malone, V. Marandon, O. Martinez, J. Martinez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Morales-Soto, E. Moreno, M. Mostafa, A. Nayerhoda, L. Nellen, M. U. Nisa, R. Noriega-Papaqui, L. Olivera-Nieto, E. G. Perez-Perez, C. D. Rho, D. Rosa-Gonzalez, E. Ruiz-Velasco, D. Salazar-Gallegos, F. Salesa Greus, A. Sandoval, H. Schoorlemmer, J. Serna-Franco, A. J. Smith, Y. Son, R. W. Springer, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Urena-Mena, L. Villasenor, Xiaojie Wang, I. J. Watson, E. Willox, H. Zhou, C. De Leon, A. Zepeda, A. Donath, S. Funk
Validation Of Standardized Data Formats And Tools For Ground-Level Particle-Based Gamma-Ray Observatories, A. Albert, R. Alfaro, J. C. Arteaga-Velázquez, H. A. Ayala Solares, R. Babu, E. Belmont-Moreno, C. Brisbois, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, S. Coutiño De León, E. De La Fuente, R. Diaz Hernandez, M. A. Duvernois, M. Durocher, C. Espinoza, K. L. Fan, M. Fernandez Alonso, N. Fraija, J. A. Garcia-Gonzalez, H. Goksu, M. M. Gonzalez, J. A. Goodman, J. P. Harding, J. Hinton, D. Huang, F. Hueyotl-Zahuantitla, P. Huntemeyer, A. Jardin-Blicq, V. Joshi, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, K. Malone, V. Marandon, O. Martinez, J. Martinez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Morales-Soto, E. Moreno, M. Mostafa, A. Nayerhoda, L. Nellen, M. U. Nisa, R. Noriega-Papaqui, L. Olivera-Nieto, E. G. Perez-Perez, C. D. Rho, D. Rosa-Gonzalez, E. Ruiz-Velasco, D. Salazar-Gallegos, F. Salesa Greus, A. Sandoval, H. Schoorlemmer, J. Serna-Franco, A. J. Smith, Y. Son, R. W. Springer, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Urena-Mena, L. Villasenor, Xiaojie Wang, I. J. Watson, E. Willox, H. Zhou, C. De Leon, A. Zepeda, A. Donath, S. Funk
Physics Faculty Research & Creative Works
Context. Ground-based γ-ray astronomy is still a rather young field of research, with strong historical connections to particle physics. This is why most observations are conducted by experiments with proprietary data and analysis software, as is usual in the particle physics field. However, in recent years, this paradigm has been slowly shifting toward the development and use of open-source data formats and tools, driven by upcoming observatories such as the Cherenkov Telescope Array (CTA). In this context, a community-driven, shared data format (the gamma-Astro-data-format, or GADF) and analysis tools such as Gammapy and ctools have been developed. So far, these …
Transcriptional Regulatory Network Topology With Applications To Bio-Inspired Networking: A Survey, Satyaki Roy, Preetam Ghosh, Nirnay Ghosh, Sajal K. Das
Transcriptional Regulatory Network Topology With Applications To Bio-Inspired Networking: A Survey, Satyaki Roy, Preetam Ghosh, Nirnay Ghosh, Sajal K. Das
Computer Science Faculty Research & Creative Works
The advent of the edge computing network paradigm places the computational and storage resources away from the data centers and closer to the edge of the network largely comprising the heterogeneous IoT devices collecting huge volumes of data. This paradigm has led to considerable improvement in network latency and bandwidth usage over the traditional cloud-centric paradigm. However, the next generation networks continue to be stymied by their inability to achieve adaptive, energy-efficient, timely data transfer in a dynamic and failure-prone environment - the very optimization challenges that are dealt with by biological networks as a consequence of millions of years …
Discovery Of Two Inhibitors Of The Type Iv Pilus Assembly Atpase Pilb As Potential Antivirulence Compounds, Keane J. Dye, Nancy J. Vogelaar, Megan O'Hara, Pablo Sobrado, Webster Santos, Paul R. Carlier, Zhaomin Yang
Discovery Of Two Inhibitors Of The Type Iv Pilus Assembly Atpase Pilb As Potential Antivirulence Compounds, Keane J. Dye, Nancy J. Vogelaar, Megan O'Hara, Pablo Sobrado, Webster Santos, Paul R. Carlier, Zhaomin Yang
Chemistry Faculty Research & Creative Works
With the pressing antibiotic resistance pandemic, Anti virulence has been increasingly explored as an alternative strategy against bacterial infections. The bacterial type IV pilus (T4P) is a well-documented virulence factor and an attractive target for small molecules for Anti virulence purposes. The PilB ATPase is essential for T4P biogenesis because it catalyzes the assembly of monomeric pilins into the polymeric pilus filament. Here, we describe the identification of two PilB inhibitors by a high-throughput screen (HTS) in vitro and their validation as effective inhibitors of T4P assembly in vivo. We used Chloracidobacterium thermophilum PilB as a model enzyme to optimize …
Further Comments On "Engineering Shape Anisotropy Of Fe3o4-Γ-Fe2o3hollow Nanoparticles For Magnetic Hyperthermia", Fernande Grandjean, Gary J. Long
Further Comments On "Engineering Shape Anisotropy Of Fe3o4-Γ-Fe2o3hollow Nanoparticles For Magnetic Hyperthermia", Fernande Grandjean, Gary J. Long
Chemistry Faculty Research & Creative Works
In their earlier paper, Niraula et al. (ACS Appl. Nano Mater. 2021, 4, 3148-3158) described the morphological, compositional, and magnetic properties of three different magnetite/maghemite or Fe3O4/γ-Fe2O3, hollow nanoparticles, referred to herein as nanorings, short-nanotubes, and long-nanotubes. Scanning electron microscopy indicates that these nanoparticles have lengths of 275 ± 51, 411 ± 92, and 515 ± 98 nm and outer diameters of 201 ± 55, 251 ± 46, and 229 ± 42 nm, respectively, dimensions that are all rather similar in view of their distributions, as is shown in a figure herein. …
Final Report - Simulation Training To Work With Bridge Inspection Robots, Sushil J. Louis
Final Report - Simulation Training To Work With Bridge Inspection Robots, Sushil J. Louis
Project WD-3
This project aims to investigate and develop a software system that helps bridge inspectors work together with semiautonomous and autonomous robots that efficiently and effectively inspect truss bridges more thoroughly in less time. Our first project WD-2 effort developed a simulation training system for bridge inspection, enabling a heterogeneous group of simulated robots to accelerate comprehensive bridge inspections. This new project WD-3 will investigate and develop techniques to 1) map the simulated world to the real world, 2) connect simulated robots with real robots being developed in other INSPIRE projects, and 3) investigate and develop algorithms, protocols, and autonomy for …
Final Report - Developing A Robotic Simulator And Video Games For Professional And Public Training, Sushil J. Louis
Final Report - Developing A Robotic Simulator And Video Games For Professional And Public Training, Sushil J. Louis
Project WD-2
This project developed a simulation training software for operators to monitor and supervise autonomous robots when inspecting steel truss bridges. Since the software abstracts the command and situation visualization interface when dealing with simulated inspection robots and bridge, the same software can be connected to physical robots to control and monitor physical robots during bridge inspection. Version 1 of Simulation Training and Control (STACS) was developed and tested with two virtual bridges and one virtual climbing robot for steel truss member inspection and one virtual flying UAV for visual inspection. This version of STACS also prototyped and tested a Robot …
Predicting Guiding Entities For Entity Aspect Linking, Shubham Chatterjee, Laura Dietz
Predicting Guiding Entities For Entity Aspect Linking, Shubham Chatterjee, Laura Dietz
Computer Science Faculty Research & Creative Works
Entity linking can disambiguate mentions of an entity in text. However, there are many different aspects of an entity that could be discussed but are not differentiable by entity links, for example, the entity "oyster" in the context of "food" or "ecosystems". Entity aspect linking provides such fine-grained explicit semantics for entity links by identifying the most relevant aspect of an entity in the given context. We propose a novel entity aspect linking approach that outperforms several neural and non-neural baselines on a large-scale entity aspect linking test collection. Our approach uses a supervised neural entity ranking system to predict …
Origin Of The Second-Order Proton Catalysis Of Ferriin Reduction In Belousov-Zhabotinsky Reactions: Density Functional Studies Of Ferroin And Ferriin Aggregates With Outer Sphere Ligands Sulfate, Bisulfate, And Sulfuric Acid, Sara C. Mccauley, Rainer Glaser
Origin Of The Second-Order Proton Catalysis Of Ferriin Reduction In Belousov-Zhabotinsky Reactions: Density Functional Studies Of Ferroin And Ferriin Aggregates With Outer Sphere Ligands Sulfate, Bisulfate, And Sulfuric Acid, Sara C. Mccauley, Rainer Glaser
Chemistry Faculty Research & Creative Works
The detailed mechanisms of Belousov-Zhabotinsky oscillating reactions continue to present grand challenges, even after half a century of study. The origin of the pH dependence of the oscillation pattern had never been rigorously identified. In our recent kinetic study of one of the key Belousov-Zhabotinsky reactions, the iron-catalyzed bromate oxidation of malonic acid, compelling agreement between experiments and kinetic simulations was achieved only with the inclusion of second-order proton catalysis of the reduction of the [Fe(phen)3]3+ species. After exhausting all other avenues in search of an explanation of this proton catalysis, we considered the possibility that the …
Coherent Enhancement Of Optical Remission In Diffusive Media, Nicholas Bender, Arthur Goetschy, Chia Wei Hsu, Hasan Yılmaz, Pablo Jara Palacios, Alexey Yamilov, Hui Cao
Coherent Enhancement Of Optical Remission In Diffusive Media, Nicholas Bender, Arthur Goetschy, Chia Wei Hsu, Hasan Yılmaz, Pablo Jara Palacios, Alexey Yamilov, Hui Cao
Physics Faculty Research & Creative Works
Remitted waves are used for sensing and imaging in diverse diffusive media from the Earth's crust to the human brain. Separating the source and detector increases the penetration depth of light, but the signal strength decreases rapidly, leading to a poor signal-to-noise ratio. Here, we show, experimentally and numerically, that wavefront shaping a laser beam incident on a diffusive sample enables an enhancement of remission by an order of magnitude at depths of up to 10 transport mean free paths. We develop a theoretical model which predicts the maximal remission enhancement. Our analysis reveals a significant improvement in the sensitivity …
Contact Process With Simultaneous Spatial And Temporal Disorder, Xuecheng Ye, Thomas Vojta
Contact Process With Simultaneous Spatial And Temporal Disorder, Xuecheng Ye, Thomas Vojta
Physics Faculty Research & Creative Works
We study the absorbing-state phase transition in the one-dimensional contact process under the combined influence of spatial and temporal random disorders. We focus on situations in which the spatial and temporal disorders decouple. Couched in the language of epidemic spreading, this means that some spatial regions are, at all times, more favorable than others for infections, and some time periods are more favorable than others independent of spatial location. We employ a generalized Harris criterion to discuss the stability of the directed percolation universality class against such disorder. We then perform large-scale Monte Carlo simulations to analyze the critical behavior …
Triple-Differential Cross Sections In Three-Dimensional Kinematics For Electron-Impact-Ionization Dynamics Of Tetrahydrofuran At 250-Ev Projectile Energy, Xiaorui Xue, Deepthy Maria Mootheril, Esam Ali, Maomao Gong, Shaokui Jia, Jiaqi Zhou, Enliang Wang, Jian Xing Li, Xiangjun Chen, Don H. Madison, Alexander Dorn, Xueguang Ren
Triple-Differential Cross Sections In Three-Dimensional Kinematics For Electron-Impact-Ionization Dynamics Of Tetrahydrofuran At 250-Ev Projectile Energy, Xiaorui Xue, Deepthy Maria Mootheril, Esam Ali, Maomao Gong, Shaokui Jia, Jiaqi Zhou, Enliang Wang, Jian Xing Li, Xiangjun Chen, Don H. Madison, Alexander Dorn, Xueguang Ren
Physics Faculty Research & Creative Works
We report a combined experimental and theoretical study of the ionization dynamics of tetrahydrofuran induced by 250 eV electron impact in which the highest occupied molecular orbital is ionized leading to the stable parent ion. Experimentally a reaction microscope was used, covering nearly the entire 4π solid angle for the ejected slow electron. We present the triple-differential cross sections for the projectile scattering angles of θ1 = -10∘ as a function of the emission angle of the ejected electrons with energies of E2=10, 15, and 20 eV, i.e., for asymmetric energy sharing between the scattered and ejected electrons. The measured …
Characterizing And Modeling The Coupled Hydro-Mechanical Cyclic Behavior Of Unsaturated Soils Using Constant Water Content Oedometer And Direct Shear Tests, Beshoy Riad, Xiong Zhang
Characterizing And Modeling The Coupled Hydro-Mechanical Cyclic Behavior Of Unsaturated Soils Using Constant Water Content Oedometer And Direct Shear Tests, Beshoy Riad, Xiong Zhang
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Most transportation infrastructures are constructed on compacted soils that are typically unsaturated above the groundwater table. The soils are subjected to cyclic traffic loadings and seasonal wetting–drying cycles. Although problems associated with unsaturated soils are ubiquitous in the US, coupled hydro-mechanical analysis is rarely included in the design/analysis of transportation geosystems. This can be attributed to two main reasons: (a) there are no simple devices/methods which can be used to rapidly characterize stress–strain behavior for unsaturated soils, and (b) there is a lack of a constitutive model to study coupled hydro-mechanical cyclic behavior for unsaturated soils in a consistent way. …
Backscattering Analysis Utilizing Relaxed Hierarchical Equivalent Source Algorithm (Rhesa) For Scatterers In Vegetation Medium, Syabeela Syahali, Hong Tat Ewe, Gobi Vetharatnam, Li (Lijun) Jun Jiang
Backscattering Analysis Utilizing Relaxed Hierarchical Equivalent Source Algorithm (Rhesa) For Scatterers In Vegetation Medium, Syabeela Syahali, Hong Tat Ewe, Gobi Vetharatnam, Li (Lijun) Jun Jiang
Electrical and Computer Engineering Faculty Research & Creative Works
The backscattering cross section of cylindrical and elliptical disk-shaped scatterers was investigated in this study, utilising a new numerical solution method called the relaxed hierarchical equivalent source algorithm (RHESA). The results were compared with the backscattering cross section of similar cases, using analytical method validation from literature. The objective of this research was to look into the possibility of replacing analytical methods with the RHESA in volume scattering calculations, and integrating it into modelling the backscattering of layers of dense media for microwave remote sensing in vegetation; as RHESA provides the freedom to model any shape of scatterer, as opposed …
Aircraft Engine Particulate Matter Emissions From Sustainable Aviation Fuels: Results From Ground-Based Measurements During The Nasa/Dlr Campaign Eclif2/Nd-Max, Tobias Schripp, Bruce E. Anderson, Uwe Bauder, Bastian Rauch, Joel C. Corbin, Greg J. Smallwood, Prem Lobo, Ewan C. Crosbie, Michael A. Shook, Richard C. Miake-Lye, Zhenhong Yu, Andrew Freedman, Philip D. Whitefield, Claire E. Robinson
Aircraft Engine Particulate Matter Emissions From Sustainable Aviation Fuels: Results From Ground-Based Measurements During The Nasa/Dlr Campaign Eclif2/Nd-Max, Tobias Schripp, Bruce E. Anderson, Uwe Bauder, Bastian Rauch, Joel C. Corbin, Greg J. Smallwood, Prem Lobo, Ewan C. Crosbie, Michael A. Shook, Richard C. Miake-Lye, Zhenhong Yu, Andrew Freedman, Philip D. Whitefield, Claire E. Robinson
Chemistry Faculty Research & Creative Works
The use of alternative jet fuels by commercial aviation has increased substantially in recent years. Beside the reduction of carbon dioxide emission, the use of sustainable aviation fuels (SAF) may have a positive impact on the reduction of particulate emissions. This study summarizes the results from a ground-based measurement activity conducted in January 2018 as part of the ECLIF2/ND-MAX campaign in Ramstein, Germany. Two fossil reference kerosenes and three different blends with the renewable fuel component HEFA-SPK (Hydroprocessed Esters and Fatty Acids Synthetic Paraffinic Kerosene) were burned in an A320 with V2527-A5 engines to investigate the effect of fuel naphthalene/aromatic …
Dynamical Excitation Processes And Correlations Of Three-Body Two-Dimensional Mixtures, G. Bougas, Simeon I. Mistakidis, P. Giannakeas, P. Schmelcher
Dynamical Excitation Processes And Correlations Of Three-Body Two-Dimensional Mixtures, G. Bougas, Simeon I. Mistakidis, P. Giannakeas, P. Schmelcher
Physics Faculty Research & Creative Works
A Scheme Is Proposed To Dynamically Excite Distinct Eigenstate Superpositions In Three-Body Bose-Fermi Mixtures Confined In A Two-Dimensional Harmonic Trap. The System Is Initialized In A Noninteracting State With A Variable Spatial Extent, And The Scattering Lengths Are Subsequently Quenched Spanning The Regime From Weak To Strong Interactions. For Spatial Widths Smaller Than The Three-Body Harmonic Oscillator Length, A Superposition Of Trimers And Atom-Dimers Is Dynamically Attained, Otherwise Trap States Are Predominantly Populated, As Inferred From The Frequency Spectrum Of The Fidelity. Accordingly, The Tan Contacts Evince The Buildup Of Short-Range Two- And Three-Body Correlations In The Course Of The …
Control Of Dy 164 Bose-Einstein Condensate Phases And Dynamics With Dipolar Anisotropy, S. Halder, K. Mukherjee, Simeon I. Mistakidis, S. Das, P. G. Kevrekidis, P. K. Panigrahi, S. Majumder, H. R. Sadeghpour
Control Of Dy 164 Bose-Einstein Condensate Phases And Dynamics With Dipolar Anisotropy, S. Halder, K. Mukherjee, Simeon I. Mistakidis, S. Das, P. G. Kevrekidis, P. K. Panigrahi, S. Majumder, H. R. Sadeghpour
Physics Faculty Research & Creative Works
We Investigate The Quench Dynamics Of Quasi-One- And Two-Dimensional Dipolar Bose-Einstein Condensates Of Dy164 Atoms Under The Influence Of A Fast Rotating Magnetic Field. The Magnetic Field Thus Controls Both The Magnitude And Sign Of The Dipolar Potential. We Account For Quantum Fluctuations, Critical To Formation Of Exotic Quantum Droplet And Supersolid Phases In The Extended Gross-Pitaevskii Formalism, Which Includes The So-Called Lee-Huang-Yang Correction. An Analytical Variational Ansatz Allows Us To Obtain The Phase Diagrams Of The Superfluid And Droplet Phases. The Crossover From The Superfluid To The Supersolid Phase And To Single And Droplet Arrays Is Probed With Particle …
Sum Rules For Energy Deposition Eigenchannels In Scattering Systems, Alexey Yamilov, Nicholas Bender, Hui Cao
Sum Rules For Energy Deposition Eigenchannels In Scattering Systems, Alexey Yamilov, Nicholas Bender, Hui Cao
Physics Faculty Research & Creative Works
In a random-scattering system, the deposition matrix maps the incident wavefront onto the internal field distribution across a target volume. The corresponding eigenchannels have been used to enhance the wave energy delivered to the target. Here, we find the sum rules for the eigenvalues and eigenchannels of the deposition matrix in any system geometry: including two- and three-dimensional scattering systems, as well as narrow waveguides and wide slabs. We derive a number of constraints on the eigenchannel intensity distributions inside the system as well as the corresponding eigenvalues. Our results are general and applicable to random systems of arbitrary scattering …
Artificial Intelligence In Civil Infrastructure Health Monitoring—Historical Perspectives, Current Trends, And Future Visions, Tarutal Ghosh Mondal, Genda Chen
Artificial Intelligence In Civil Infrastructure Health Monitoring—Historical Perspectives, Current Trends, And Future Visions, Tarutal Ghosh Mondal, Genda Chen
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Over the past 2 decades, the use of artificial intelligence (AI) has exponentially increased toward complete automation of structural inspection and assessment tasks. This trend will continue to rise in image processing as unmanned aerial systems (UAS) and the internet of things (IoT) markets are expected to expand at a compound annual growth rate of 57.5% and 26%, respectively, from 2021 to 2028. This paper aims to catalog the milestone development work, summarize the current research trends, and envision a few future research directions in the innovative application of AI in civil infrastructure health monitoring. A blow-by-blow account of the …
Data Augmentation For Improving Emotion Recognition In Software Engineering Communication, Mia Mohammad Imran, Yashasvi Jain, Preetha Chatterjee, Kostadin Damevski
Data Augmentation For Improving Emotion Recognition In Software Engineering Communication, Mia Mohammad Imran, Yashasvi Jain, Preetha Chatterjee, Kostadin Damevski
Computer Science Faculty Research & Creative Works
Emotions (e.g., Joy, Anger) are prevalent in daily software engineering (SE) activities, and are known to be significant indicators of work productivity (e.g., bug fixing efficiency). Recent studies have shown that directly applying general purpose emotion classification tools to SE corpora is not effective. Even within the SE domain, tool performance degrades significantly when trained on one communication channel and evaluated on another (e.g., Stack Overflow vs. GitHub comments). Retraining a tool with channel-specific data takes significant effort since manually annotating a large dataset of ground truth data is expensive. In this paper, we address this data scarcity problem by …
Understanding The Effect Of Sodium Polyphosphate On Improving The Chemical Stability Of Ti3c2tz Mxene In Water, Shuohan Huang, Varun Natu, Jingyi Tao, Yumin Xia, Vadym Mochalin, Michel W. Barsoum
Understanding The Effect Of Sodium Polyphosphate On Improving The Chemical Stability Of Ti3c2tz Mxene In Water, Shuohan Huang, Varun Natu, Jingyi Tao, Yumin Xia, Vadym Mochalin, Michel W. Barsoum
Chemistry Faculty Research & Creative Works
Degradation of MXenes in aqueous environments severely limits the application and industrialization of this large family of two-dimensional (2D) materials. Hydrolysis and oxidation are now considered as two main degradation mechanisms and while significant efforts have been directed to prolonging the shelf-life of MXenes, separating and studying their degradation mechanisms have lagged behind. Herein, gas analysis via gas chromatography and Raman spectroscopy were used to investigate the effect of sodium polyphosphate, PP, on the degradation of Ti3C2Tz MXene. Transmission and scanning electron microscopies, as well as X-ray photoelectron spectroscopywere also used as complimentary techniques to …